Town
C-NRPP certified radon testing and mitigation businesses with an office in Gloucester, Ontario, and the 2024 survey figure for its census division, dated.
Photo: Ian Furst, CC BY-SA 3.0, cropped, via Wikimedia Commons.
12
%About 1 in 8 properties
Share of properties in the Ottawa census division, which includes Gloucester, with radon at or above 200 Bq/m³ in the 2024 Cross-Canada Radon Survey. The survey reports no figure for Gloucester itself.
1
Businesses with a business address in Gloucester and at least one active C-NRPP credential, as of 2026-11-03. Providers based elsewhere may also serve Gloucester.
Sorted alphabetically by business name. Every C-NRPP certified business is listed free, and payment never affects the order.
C-NRPP
Last registry check
Certified providers near Gloucester
Businesses for hire with an active C-NRPP credential and an office within 50 km of Gloucester, closest first. Each business is placed at the centre of its office’s postal code area and Gloucester at the centre of its built-up area, so distances are approximate.
Sorted by distance, closest first. Every C-NRPP certified business is listed free, and payment never affects the order.
| Business | Town | Distance (km, approximate) | Services |
|---|---|---|---|
| InAIR Environmental Ltd. | Ottawa | 5 | Measurement |
| Ready Home Experts | Orleans | 6 | Measurement |
| Buller Crichton Environmental Inc. | Ottawa | 9 | Measurement |
| RADORA | Ottawa | 9 | Measurement, Mitigation |
| Buller Crichton Environmental Inc. | Ottawa | 13 | Measurement |
| EHS Partnerships Ltd. | Ottawa | 13 | Measurement |
| 613environmental | Kinburn | 15 | Measurement, Mitigation |
| Ottawa Valley Radon Solutions | Fitzroy Harbour | 15 | Measurement |
| MB Radon Solutions | Gatineau (Aylmer) | 19 | Measurement, Mitigation |
| Radon Works | Nepean | 20 | Measurement, Mitigation, New construction (CRNCH) |
| Barrhaven Home Inspectors, Inc | Ottawa | 21 | Measurement |
| Radon Hero | Ottawa | 21 | Measurement, Mitigation |
| YUEFANG DENG | Nepean | 21 | Measurement |
| Radon Pros Canada Inc. | Ottawa | 23 | Measurement, Mitigation, New construction (CRNCH) |
| Simon Air Quality | Russell | 26 | Measurement, Mitigation |
| Radon Ottawa - Gatineau | Kanata | 27 | Measurement, Mitigation |
| Ottawa Radon Expert | Kanata | 27 | Measurement, Mitigation |
| Radon Outaouais | Lochaber-Partie-Ouest | 29 | Measurement |
| Chartrand Home Air Solutions | Embrun | 29 | Measurement |
| Fengyun BI | Ottawa | 31 | Measurement |
| Travis Valcourt | Stittsville | 31 | Measurement |
| Rodon Emergency Management Inc. | Kemptville | 46 | Measurement |
C-NRPP, Find a Professional directory: every province and territory searched for each of the six service types, de-duplicated by the registry's person id. Pulled on 2026-11-03. Distances use Statistics Canada, 2021 Census forward sortation area, population centre and census subdivision boundary files, adapted; not an endorsement by Statistics Canada.
Laws, codes and decisions on radon that apply in Gloucester
Each row names its instrument and status as the authority states it. Guidance is not law; a tribunal decision is not court precedent. Canada's 200 Bq/m³ guideline binds no homeowner.
| Rule type | Applies to | What it says | Instrument | Status | In effect from |
|---|---|---|---|---|---|
| Building code | Ontario | Ontario's current code came into force 1 January 2025 and revoked the 2012 code. New houses require a rough-in for a subfloor depressurization system, and all permit applications from 1 April 2025 must use the 2024 code; the building officials' association says a sub-slab depressurization rough-in is required for all Part 9 residential uses, along with a separate membrane air barrier. The 2012 code applied radon provisions only where radon was "known to be a problem"; that rule is historical, though it still governs some transition projects. | O. Reg. 163/24: Building Code (adopting the National Building Code 2020 with Ontario amendments) | In force | 2025-01-01 |
| Real estate disclosure | Ontario | Sellers must disclose known latent defects that make a home unsafe, and TRESA Phase 2 put separate disclosure duties on agents. The Seller Property Information Statement is voluntary, and its environmental question names radon gas as an example. | Trust in Real Estate Services Act, Phase 2 (in force 1 December 2023); OREA Seller Property Information Statement (voluntary) | In force | 2023-12-01 |
| Rental housing | Ontario | The tribunal held that radon above Health Canada's guideline breached the landlord's duty to keep the unit in good repair. A tenancy tribunal decision, not court precedent. | Landlord and Tenant Board, CET-67599-17 (Re), 2017 CanLII 60362 | Tribunal or court decision | no data |
| New home warranty | Ontario | Radon in a new home shall not exceed 200 Bq/m³. Repairs are required where a long-term test of 91 days or more, conducted in the lowest level, exceeds 200 Bq/m³ and the exceedance results from a Building Code violation or a defect in the builder's work or materials. Coverage runs one year for workmanship and materials, two years for Code health and safety violations and seven years for major structural defect, and stays with the home for seven years from original possession. Up to $50,000 where the purchase agreement was signed after 1 February 2021, otherwise $15,000. An approved do-it-yourself kit or a certified professional may run the test. | Tarion Construction Performance Guidelines, 5th Edition, article FH 1.19 Radon Exceeds Acceptable Levels (added 24 May 2024; process in effect since 2013) | In force | 2024-05-24 |
| Workplace | Ontario | Ontario applies the Canadian NORM Guidelines to all workplaces through its general duty clause and tells employers to reduce radon below 200 Bq/m³ through engineering controls where possible. Ontario's mines regulation (RRO 1990, Reg. 854) addresses radon at sections 288 to 293; those duties are not transcribed here until the regulation text is read. | Ontario guidance, Radon in the workplace (applying the Canadian NORM Guidelines under the general duty clause) | Guidance | no data |
Rules that apply across Canada are on the Ontario page.
The radon rules dataset; each row cites its primary source and the date checked.
Grant
Up to $1,500 toward home radon mitigation. Radon is named as eligible. Current. As of 2026-09-01.
Forgivable loan
Varies by service manager, roughly $15,000 to $25,000. Radon is not named. Varies by service manager. As of 2026-09-18.
Warranty coverage
Up to $50,000 where the Agreement of Purchase and Sale was signed after 1 February 2021, otherwise $15,000. Radon is named as eligible. Current for qualifying homes. As of 2026-09-18.
Free or subsidized testing
Running for 2025 and 2026 with a live community list by province. Most participating communities distribute free kits; some charge a low fee. Current. As of 2026-09-18.
Free or subsidized testing
Free long-term (91 days or more) alpha track test kit, mailed back for analysis. Current. As of 2026-10-27.
Province or territory
Radon by census division, and every certified provider in Ontario.
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